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J. BROOKS. BED AND GYLNDBR PRINTING MACHINE.

Patented Feb. 7,1893.

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J. BROOKS.. BBD ANB GYLINDERPRINHNG MACHINE. No. 191,334.

(No Mode.)

Patented Peb. 7', l893 @COLT/neme@ (Nn Model.)

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J. BROOKS.

BED AND CYLINDER PRINTING MAGHINE.

' Patented Feb. 7, 1893.

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Patented Peb. 7, 1893'.v

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J. BROOKS. BED AND GYLINDER PRINTING MACHINE.

Patented Feb. 7, 1893u I:un l Il Nmmmlm (No Model.) 7 Sheets-Sheet 6.

J. BROOKS.

BED ANDv CYLINDER PRINTING MAGHINB. No. 491,334. Patented Feb. y7, 1893.

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J.r BRooKsf BED AND CYLIHDBR 'PRINTING MAGHINE.

Patented Feb. 7, 1893,

n No. 491,334.

Unire Srnfrns nrniv'r nnte.

JOHN BROOKS, OF PLAINFIELD, NEW JERSEY, ASSIGNOR TO CHARLES POTTER, JR.,HORACE XV. FISH, JOSEPH M. TITSVORTH, AND DAVID E. Tl'lSlVORTl'l, OF NEWYORK, N. Y.

BED AND CYLINDER PRlNTlNG-MACl-HNE.

SPECIFICATION forming part of Letters Patent No. 491,834, dated February"1', 1893.

Application tiled December 31,1891. Serial No. 416,652- (N0 mOdel-l iball when?, it may concern.-

Be it known that l, JOHN BROOKS, of the city of Plainfield, county ofUnion, and State of New Jersey, have invented certain new and usefulimprovements in Bed and Cylinder' Printing-lllachines, `fully set forthin the following description and represented in the accompanyingdrawings.

This invention relates generally to bed and cylinder printing machines,and more particularly to the means for operating and controllingl themotion of certain parts of such machines.

It has for its object, among' other` things, to provide means wherebythe impression cylinder and bed are caused to travel with the samesurface speed duringr the time of impression and to otherwise controlthe movement of the cylinder so that efficient work and accurateregister of the sheets are produced.

As a better understanding of the invention and its scope may be had froma detailed description ot' a practical emhodimient thereof, suchdescription will now be given, reference being had to the accompanying`drawings.

.ln said drawings-Figure 1, is a side elevation of a cylinder printing,`machine provided with the invention. Fig. 2, is a diagram of a ,similarmachine showing a changed position ot the parts. Fig'. 3, is an endelevation partially in section of the machine shown in Fig. l; and Fig.3 is a detached view ot' a cam and connections. Fig. l, is a viewsimilar to Fig'. l, a slightly modified form of the invention. Fig. 5,is a similar view of the invention applied to a single revolutioncylinder machine; and Fig. G, is a partial sectional elevation of thesame. Fig; 7, is a similar view to Fig. 1, of another modified form ofthe invention; and Fig. S, is a partial cross section ot the same. Figs.El and lO are respectively a partial side elevation and cross section ofa moditied form of the connection between the impression cylinder andhed.

ln the severaldifterent embodiments of the invention, only such devicesand details of well known :terms of printing` machines are representedas will aid a proper understand ing of its function and operation. Ineach of these embodiments, the machine frame supports the usualimpression cyliuderA having grippers which take the sheets from the feedboard B or other source ofv supply and after printing, as one mode ofdelivery, deliver them to the delivery cylinder C and from thence takenby tapes down in front ot a fly D to be piled. lVith the impressioncylinder there co-operates a reciprocating form bed E moved by atraveling' gear F, which in turn is operated in the usual manner hy thefixed rack G, the rack G on the under side of the bed, and the revolvingcrank shaft H through the connecting rod l. The crank shaft is rotatedat proper speed in anyproper manner7 as from the driving shaft J througha gear Wheel K fast to the crank shaft in mesh with the driving pinionL. The construction and arrangement of the parts thus far described mavbe of any of the usual and common forms uand will be varied according,`as the style ot the machine may vary. Other means of supplying sheets tothe impression cylinder and for delivering them either iiat or foldedmay be employed without effecting the improvements now to he described.

It will be understood that during the rotation of the crank shaft, thespeed of the travcling gear F and hence that of the form bed willgradually change from its maximum to its minim nm, then they willmomentarily stop in the reversal of their direction of movement as thecrank is passing the dead center, then move at its minimum speedgradually accelerating` until the maximum speed is reached again, and soon during each reciprocation of the bed, and traveling gear. From whichit will be seen that the speed of movement of the form bed Willconstantly change, so that it is important that the speed of theimpression cylinder during the taking of the iinpression shall exactlycorrespond with that of the bed in order to obtain proper working,accurate register of the sheet and perfect impressions.

The present improvements consist essen tially in the combination withthe impression cylinder A,the form bed E, and the driving crank shaft H,of connections between said crank shaft and the cylinder whereby duringthe taking of the impression the cylinder will have the same surfacespeed and move in unison with the form bed; or, in other words, wherebythe crank movement of the bed is produced in the cylinder so that aconstant movement of both the bed and cylinder during the impressionatan irregular speed in unison is effected. These connections, broadlyspeaking, are such as to transmit a rotation or rotations to theimpression cylinder in counterpart of that imparted to the form bed bythe crank shaft, so that the same variation in speed of the bed may beduplicated in the speed of that cylinder, and so long as this isaccomplished, it is immaterial whether the motion be taken from thecrank shaftper se or from other moving part of the printing machine, aswill hereinafter appear. In the present embodiments of the invention,the crank shaft is, however, utilized because itis not only preferablein practice to do so, but it obviates the necessity of providingadditional devices; and the connections with the cylinder may consistwholly of gearing or partially of gearing with coacting devices.

Referring now to Figs. l, 2 and 3, the invention is shown combined withatwo revolution cylinder machine, the impression cylinder making twocomplete revolutions-it might be more according to the diameter of thecylinder and the gearing-to each revolution of the crank shaft and henceto each complete reciprocation of the form bed,-once forward and return.During the first revolution of the impression cylinder it may besupposed that the impression is taken in which case the grippers willhave seized a sheet and in the rotation of the cylinder will carry it incon tact with the form bed then moving in the same direction, thecylinder then being in what is termed its plane of impression; and assoon as the end of the sheet has left the bed and during the return oridle reci procation of the form bed, the impression cylinder will havebeen raised out of its plane of impression and when in this position andduring such return movement will make its second revolution, which isconsequently an idle one. rlhe timely lifting and lowering of theimpression cylinder may be effected in any of the usual ways, that takenfor illustration being substantially the same as that set forth inLetters Patent No. 274,558, granted to me, and consists in mounting theboxes 30 supporting the journals of the cylindershaft so as to slidevertically in guideways in the frame work. Each box is seated on the endof a vertical rod 3l, the lower end of which is in turn seated upon apair of springs 32 and just above this end the rod is screw threaded andengaged by a nut confined in an opening in the framework and bears apinion 34. This pinion is engaged by a rack bar 35 that is connected bya link 36 with the upper end of a vibrating arm 37; and the arm isconnected with a cross rock shaft 3S, which at the opposite side of theframe bears a similar vibrating arm for operating in unison a duplicateof the raising and lowering devices on that side of the machine. Thevibrating arm 37 is moved from a cam 39, see Fig. 3,.on the crank shaftH by a connecting rod 40, one end connected with the vibrating arm andthe other end slotted to embrace the crank shaft with rolls bearingagainst the cam as is usual in such constructions. The connectionsbetween the crank shaft H and the impression cylinder in this embodimentconsist of the toothed wheel 20, intermediate toothed wheel 2l, andtoothed wheel 22. The latter wheel is fast to the cylinder shaft; theintermediate rotates on a stud projecting from the framework, and thewheel 2O rotates loosely on a hub 23 secured to and projecting outwardlyfrom one of the crank shaft bearings 24:. The hub is represented as aflange arranged eccentric to the axis of the crankshaft and hencesupports the toothed wheel 2O in a like position with respect thereto.The end of the crank shaft projects through its bearings 24 and thehub23 and carries at its outer end and fast thereto a driving arm 25 thatbears a roll 9 engaging a co-operating guide- Way or slot 8 formed in orcarried by the toothed wheel 20. The effect of these connections duringthe rotations of the crank shaft is to impart through the arm 25rotations to the toothed wheel 2O and thence by the other intermeshinggears to the impression cylinder. The eccentric arrangement of thetoothed wheel 20 with respect to the crank shaft and the intermediatesliding connections between said shaft and wheel are such as to impartto said toothed wheel 20 and hence to the impression cylinder anirregular speed corresponding to thespeed of the crank movement of thebed during the impression or printing operation. The connections betweenthe crank shaft and cylinder, like that between said shaft and theform-bed, being positive, a constant movement with irregular speed isimparted to said cylinder; and the toothed Wheel 2O being twice thediameter of the cylinder toothed wheel 22, it results in the cylindermaking two revolutions to each revolution of the wheel 2O and of thecrank shaft.

In the position of the parts in full lines, Fig. l, the for1n-bed isabout in mid stroke moving in the direction of the arrow thereon, withthe impression cylinder in the plane of impression with the forward edgeof a sheet just taking the impression. Owing to the position of thecrank of the crank shaft, the bed is moving at its maximum speed, andthe outer end of the arm 25 being at its nearest point to the axis ofrotation of the toothed wheel 20, said toothed wheel is likewise movingat its maximum speed, so that if the proportions of the parts beaccurate, the cylinder and bed will be moving in unison at the samesurface speed. As the crank of the crank shaft is passing the rearwarddead IIO ried on the toothed Wheel 22. The arrangement of these parts issuch that while the bed is traveling at its maximum speed, the end ofthe arm 27, engaging with the slot of the toothed Wheel 22 furtherremoved from the center of the Wheel, drives the cylinder at acorresponding speed which gradually diminishes just as the speed of thebed diminishes as the crank approaches the dead center, so that theimpression cylinder and bed are accurately 1n unison and with the samesurface speed during the impression or printing operation.

Referring again to the other constructions herein illustrated, andparticularly Figs. 1 and 2, it is not deemed essential that the crankshaft H be driven directly by the driving pini011 L, through the toothedwheel K; but that said toothed Wheel K may be entirely omitted and themain driving shaft J so arranged that its driving pinion L may geardirectly with the toothed wheel 20, as indicated by the dotted lines Lin Fig. 2. In such an arrangement of the main driving pinion, theimpression cylinder instead of following the movements of the bed, thereverse will be the result,-the bed will follow the movements of theimpression cylinder; the connection being direct from the driving pinionthrough the several toothed Wheels 20, 21, and 22, to the impressioneylinder,\vhile the connection With the bed Will be through the guideway8, the driving arm 25, and the crank shaft and travelinggearF to thebed. The unison and speed of the impression cylinder and bed may bestill further accurately imparted by providing for the coupling of theimpression cylinder and bed together during the impression or printingoperation. Thus in the arrangement shown in Figs. 1, 2 and 3, and seenpartly in Fig. 3, the bed carries a registering rack 12, that is engagedby a toothed wheel13, mounted loosely on the cylinder shaft at the innerend of a sleeve 14, the outer end of Which has a hub provided with asingle notch with which engages a single projection on a sliding clutchmember 15,splined to the cylinder shaft; the single notch and projectioninsuring the coupling of the bed always in one position of the parts.

During the idle movements of the cylinder and bed, or at all other timesthan during the taking of the impression, the sliding clutch member willkeep the dotted position shown in Fig. 3, With its tooth out ot'engagement with the notch, so that While the toothed Wheel 13 and rack12 may be in engagement, the toothed Wheel Will rotate and oscillateidly independent of the cylinder, which constantly rotates in onedirection.

To effect the coupling operation, there is provided a cam 1G, see Fig.3, fast to a longitudinal shaft 17, mounted in suitable bearings in themachine to which continuous motion is imparted from the crank shaft by apair of bevel gears 13, one fast on the shaft 17, and the other to thecrank shaft, see Fig.

3. Vith this cam there co-operates a pair vof rolls at the end of apivoted arm 19, the opposite end of which is forked to loosely engagethe groove of the sliding clutch member 15. The arrangement of theseparts is such that immediately the bed and impression cylinder commenceto coact for the printing operation and are movingat the same surfacespeed, the cam 16 Will operate to rock the clutch arm 19 and thus slidethe projection of the sliding clutch member 15 into the notch of thesleeve 14, Which thus couples the cylinder with the bed through itsshaft, sleeve 14, gear 13 and rack 12, so that during the furthermovement in unison of the bed and cylinder, they are coupled together;and as soon as the printing operation is completed, the cam Will act toagain rock the arm 19 and move the sliding clutch member back to itsinoperative position, uncoupling the cylinder from the bed. The positionof the parts are also such, there being a single notch in the hub of thesleeve 14, that as soon as said notch, in the rotation of the gear 13with the bed, arrives in alignment with the projection of the slidingclutch member, the cam 16 will immediately act to move the projectionfreely into the notch; the projection and notch at this time travelinginunison at the same speed. Another form of this cylinder and bed couplingmechanism is shown in Figs. 9 and 10. In this case the loose oscillatingtoothed .Wheel 13 meshes With the rack 12, carried by the bed asbefore,and the coupling is effected by providing the toothed Wheel 13with a spring-pressed paWl 42 that is adapted to engage with a notch cin a disk 41, secured to the impression cylinder shaft or formed on theend of the cylinder. The arrangement of these parts is such that theimpression cylinder A with the disk 41 constantly rotates in thedirection of the arrow through the driving connections and in themannerheretofore described,while the toothed Wheel 13 oscillates in theback and forth reciprocations of the bed. In the oscillation of thetoothed Wheel 13 in the direction the reverse of the movement of theimpression cylinder, the pawl 40 moves back idly over the periphery ofthe disk 41, as Will be apparent, and such oscillation carries the pawl40 beyond the notch c of the disk before the direction of the toothedwheel 13 reverses. On the reversal of this direction of movement of thetoothed Wheel 13 in the same direction as the impression cylinder, thespeed of the toothed wheel, being slightly in excess of that of theimpression cylinder, the pawl will have caught up with the Wall of thenotch c simultaneous with the coaction of the impression cylinder andbed at the same surface speed, so that should there be any tendency ofthe cylinder to lag, the pawl will compel its continuous movement inunison with the speed of the bed until the time the bed arrives at theend of its reciprocation and starts to reverse its direction, when thetoothed Wheel 13 and pawl will simultaneously oscillate in the oppositedirection and leave the cylinder and its dish il to continue theironward rotation.

What is claimed is:-

l. In, a cylinder printing machine, the combination with the form bedand the impression cylinder, oi' a shaft bearing two cranks, one havingconnections with the form bed and the other .having connections with theimpression cylinder, whereby the cylinder and bed will nieve at the samesurface speed during the impression, substantially as described.

2. In a cylinder printing machine in which the bed is driven from thecrank-shaft, the combination with the impression cylinder, the form bed,and the crank-shaft, of a driving gear concentric with its axis otrotation and mounted eccenirically with respect to and connected withthe cranlr shaft, and gearing between said driving gear and theimpression cylinder, substantially as described.

3. The combination with the impression cylinder, its form bed, andcrank-shaft for reciprocating the bed, of a driving gear geared With theimpression cylinder, and sliding connections directly between thecranlr-shaftand the driving gear for moving the impression cylinder andbed in unison at the saine surface speed dering the printing operation,substantially as described.

Ll. The combination with theimpression cylinder, its form bed, andcrank-shaft for reciprocating the bed, of the driving gear geared withthe impression cylinder, a guidev/ay carried by the driving gear, and adriving arm fastto the crank-shaft and engaging with said guideway,substantially as described.

5. The combination with the impression cylinder, .its form bed and acrank shaft for reci procating the bed,'of a driving toothed Wheeleccentrically mounted to the crank shaft, and gearing between said Wheeland the impression cylinder, a curved gnidervay carried by the drivingtoothed Wheel, and a driving arm fast to the cranlr shaft and engagingWit-h said curved guideway.

6. The combination With the cylinder revolving continuously at anirregular speed in one direction and a reciprocating bed, also moving atan irregular speed of an oscillating toothed Wheel in gear with the bed,a coupling device for coupling the toothed Wheel `with the cylinderwhereby the latter and the bed move in unison, and a driver Vfor boththe cylinder and the bed whereby both are moving at substantially thesame surface speed at the time 'the coupling` device couples saidtoothed Wheel and cylinder together, substantially as described.

7. The combination with the impression cylinder revolving continuouslyin one direction,

and a reciprocating bed, of an oscillating toothed Wheel in gear Withthe bed, a clutch, one member on the toothed Wheel and the other carriedwith the cylinder, and a revolving cam for moving the members intoandout of engagement, substantially as described.

S. The combination With the impression cylinder, the form bed and ashaft bearing t \vo cranks, one crank having connections With the iormbed, and the other crank havlng connections with the impressioncylinder; for driving the cylinder and bed during impression at the samesurface speed, and a 'coupling device for coupling the bed and cylindertogether during impression, substantially as described.

9. The combination with the impression cylinder, the form bed andcrank-shaft for moving the bed, of gearing interposed between thecrank-shaft and impression cylinder for drivin g the latter duringimpression at the same surface speed with the bed, and an oscillatin gtoothed Wheel in gear With the bed a clutch for coupling the cylinder tothe toothed Wheel during impression, and a revolving cam and connectionsfor moving one clutch member into en gagement with theother,substant1ally as described.

l0. The combination With the impression cylinder, its form bed, andmeans for moving the bed at an irregular speed, of a driving toothedWheel geared with the impressioncylinder, a driven shaft and slidingconnections embracing a compensating guide between tne shaft and drivingtoothed Wheel for rotating the cylinder at an irregular speed in unisonwith the bed, substantially as described. n

ll. The combination with the impression cylinder, its form bed, andmeans for moving the bed at an irregular speed, of a driving toothedWheel geared with the impression cylinder, a driven shaft mountedeccentrically to the axis of said toothed Wheel and sliding connectionsembracing a compensating guide between the shaft and toothed Wheel,substantially as described.

l2. The combination with the impression cylinder, its form bed, and acrank-shaft having connections with the bed for reciprocating it, of adriving toothed Wheel mounted eccentrically to and independent of thecrankshaft, and geared with said cylinder, and sliding connectionsbetween the crank-shaft and toothed Wheel, substantially as described.

In Witness whereof l have signed my name, in the presence of twoWitnesses, this 26th day of December, 1891.

JOHN BROOKS.

Witnesses:

N. Maanen, Guo. H. GRAHAM.

IOO

IIO

